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Question
Differentiate asymmetric and symmetric algorithms.
Distinguish Between
Solution
| Symmetric Key Encryption | Asymmetric Key Encryption |
| Same key is used for both encryption and decryption. | Different keys are used for encryption and decryption. |
| Speed of encryption or decryption is very fast. | Speed of encryption or decryption is comparatively slow. |
| Plain text and cipher text are of same size. | The size of cipher text is always greater than plain text. |
| Algorithms like DES, AES, RC4 uses symmetric key encryption. | Algorithms like RSA, ECC, DSA use asymmetric key encryption. |
| Provides confidentially. | Provides confidentially, authenticity and non-repudiation. |
| The number of key used grows exponentially with the numbers of users. | The number of key used grows linearly with the numbers of users. |
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